BioMedical Admissions Test (BMAT) Practice Test 2026 - Free BMAT Practice Questions and Study Guide

The volume of a cube is calculated using the formula \( V = s^3 \), where \( s \) represents the length of one side of the cube. This formula arises from the geometric definition of a cube, which is a three-dimensional shape with all sides of equal length. By raising the length of one side to the third power, you account for the three dimensions of space: length, width, and height.

In contrast, while the alternative formulas might also pertain to different geometric shapes, \( V = l \times w \times h \) is used for calculating the volume of a rectangular prism where all sides can differ; \( V = \frac{4}{3}\pi r^3 \) is specific to the volume of a sphere; and \( V = b \times h \) pertains to the volume of a prism where \( b \) is the area of the base and \( h \) is the height of the prism. None of these formulas apply to a cube with equal dimensions on all sides, thus reinforcing \( V = s^3 \) as the correct formula for the volume of a cube.